An experiment set-up for analysis of lateralization judgments of binaural stimuli
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Engenharia Biomédica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-31512013000400004 |
Resumo: | INTRODUCTION: The aim of this work is to present a physical implementation of a noninvasive methodology to analyze the directional sensitivity of human auditory system. A computer controlled experiment set-up has been designed and developed to study the behavior of human subjects under the presentation of interaural time delays and interaural amplitude differences for several sensation levels. METHODS: The proposed methodology comprises: the application of trains of low-pass filtered narrow pulses as acoustic binaural stimuli; the automatic, simultaneous and random variation of interaural time delays and interaural amplitude differences; the absence of human interference along the experimental sessions, except for the decision of the listener under test; the minimization of adaptation effects. RESULTS: Numerous lateralization judgments have been accomplished in order to investigate the transduction mechanism which allows deciding which side of subjects medial plane the source of binaural acoustic stimuli is located in. The behavior of decision time with the order of judgment, the sensation levels and the interaural differences in time and amplitudes has been analyzed. CONCLUSION: The noninvasive, reliable and automatic approach here presented allows obtaining psychophysical responses associated to the neuro-physiological phenomena underneath lateralization capability. |
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Revista Brasileira de Engenharia Biomédica (Online) |
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An experiment set-up for analysis of lateralization judgments of binaural stimuliLateralization judgmentsPsychoacousticsInteraural time delayInteraural amplitude differenceBinaural hearingINTRODUCTION: The aim of this work is to present a physical implementation of a noninvasive methodology to analyze the directional sensitivity of human auditory system. A computer controlled experiment set-up has been designed and developed to study the behavior of human subjects under the presentation of interaural time delays and interaural amplitude differences for several sensation levels. METHODS: The proposed methodology comprises: the application of trains of low-pass filtered narrow pulses as acoustic binaural stimuli; the automatic, simultaneous and random variation of interaural time delays and interaural amplitude differences; the absence of human interference along the experimental sessions, except for the decision of the listener under test; the minimization of adaptation effects. RESULTS: Numerous lateralization judgments have been accomplished in order to investigate the transduction mechanism which allows deciding which side of subjects medial plane the source of binaural acoustic stimuli is located in. The behavior of decision time with the order of judgment, the sensation levels and the interaural differences in time and amplitudes has been analyzed. CONCLUSION: The noninvasive, reliable and automatic approach here presented allows obtaining psychophysical responses associated to the neuro-physiological phenomena underneath lateralization capability.SBEB - Sociedade Brasileira de Engenharia Biomédica2013-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-31512013000400004Revista Brasileira de Engenharia Biomédica v.29 n.4 2013reponame:Revista Brasileira de Engenharia Biomédica (Online)instname:Sociedade Brasileira de Engenharia Biomédica (SBEB)instacron:SBEB10.4322/rbeb.2013.035info:eu-repo/semantics/openAccessNogueira,Jurandyr SantosCunha,Ana Isabela AraújoBraghiroli,Maria Clara Barretto de Freitas MelroFreire,Raimundo Carlos Silvérioeng2015-05-19T00:00:00Zoai:scielo:S1517-31512013000400004Revistahttp://www.scielo.br/rbebONGhttps://old.scielo.br/oai/scielo-oai.php||rbeb@rbeb.org.br1984-77421517-3151opendoar:2015-05-19T00:00Revista Brasileira de Engenharia Biomédica (Online) - Sociedade Brasileira de Engenharia Biomédica (SBEB)false |
dc.title.none.fl_str_mv |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
title |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
spellingShingle |
An experiment set-up for analysis of lateralization judgments of binaural stimuli Nogueira,Jurandyr Santos Lateralization judgments Psychoacoustics Interaural time delay Interaural amplitude difference Binaural hearing |
title_short |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
title_full |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
title_fullStr |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
title_full_unstemmed |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
title_sort |
An experiment set-up for analysis of lateralization judgments of binaural stimuli |
author |
Nogueira,Jurandyr Santos |
author_facet |
Nogueira,Jurandyr Santos Cunha,Ana Isabela Araújo Braghiroli,Maria Clara Barretto de Freitas Melro Freire,Raimundo Carlos Silvério |
author_role |
author |
author2 |
Cunha,Ana Isabela Araújo Braghiroli,Maria Clara Barretto de Freitas Melro Freire,Raimundo Carlos Silvério |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Nogueira,Jurandyr Santos Cunha,Ana Isabela Araújo Braghiroli,Maria Clara Barretto de Freitas Melro Freire,Raimundo Carlos Silvério |
dc.subject.por.fl_str_mv |
Lateralization judgments Psychoacoustics Interaural time delay Interaural amplitude difference Binaural hearing |
topic |
Lateralization judgments Psychoacoustics Interaural time delay Interaural amplitude difference Binaural hearing |
description |
INTRODUCTION: The aim of this work is to present a physical implementation of a noninvasive methodology to analyze the directional sensitivity of human auditory system. A computer controlled experiment set-up has been designed and developed to study the behavior of human subjects under the presentation of interaural time delays and interaural amplitude differences for several sensation levels. METHODS: The proposed methodology comprises: the application of trains of low-pass filtered narrow pulses as acoustic binaural stimuli; the automatic, simultaneous and random variation of interaural time delays and interaural amplitude differences; the absence of human interference along the experimental sessions, except for the decision of the listener under test; the minimization of adaptation effects. RESULTS: Numerous lateralization judgments have been accomplished in order to investigate the transduction mechanism which allows deciding which side of subjects medial plane the source of binaural acoustic stimuli is located in. The behavior of decision time with the order of judgment, the sensation levels and the interaural differences in time and amplitudes has been analyzed. CONCLUSION: The noninvasive, reliable and automatic approach here presented allows obtaining psychophysical responses associated to the neuro-physiological phenomena underneath lateralization capability. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-31512013000400004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-31512013000400004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.4322/rbeb.2013.035 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
SBEB - Sociedade Brasileira de Engenharia Biomédica |
publisher.none.fl_str_mv |
SBEB - Sociedade Brasileira de Engenharia Biomédica |
dc.source.none.fl_str_mv |
Revista Brasileira de Engenharia Biomédica v.29 n.4 2013 reponame:Revista Brasileira de Engenharia Biomédica (Online) instname:Sociedade Brasileira de Engenharia Biomédica (SBEB) instacron:SBEB |
instname_str |
Sociedade Brasileira de Engenharia Biomédica (SBEB) |
instacron_str |
SBEB |
institution |
SBEB |
reponame_str |
Revista Brasileira de Engenharia Biomédica (Online) |
collection |
Revista Brasileira de Engenharia Biomédica (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Engenharia Biomédica (Online) - Sociedade Brasileira de Engenharia Biomédica (SBEB) |
repository.mail.fl_str_mv |
||rbeb@rbeb.org.br |
_version_ |
1754820915073384448 |